Using the same methods that make all sour candy sour, Black Death is flavored with a mix of acidic ingredients, including citric acid and malic acid. Both acids create sour tastes, but citric acid provides more of a punching, immediate tartness, and malic acid provides a smoother, lingering tartness.

Yes, consuming too much sour candy can lead to physical effects on your body. The acids in sour candy can damage the top layer of skin on your tongue, causing it to feel raw and sensitive. In extreme cases, it can also cause mouth blisters and damage your taste buds.